Data Sheet

7
Trigger during capturing and search after capturing
The trigger function allows you to set diverse parameters to detect
a particular waveform anomaly during capturing. Setting the pre-
trigger mode allows you to monitor the pre-trigger waveform. This is
useful for analyzing the cause of the anomaly.
On the other hand, the search function allows you to detect an anom-
aly after all data is captured. This allows you to search for and display
an anomaly in the same manner as with the trigger function.
When a waveform is unpredictable and setting a parameter during
measurement is difficult, it is recommended to use the search func-
tion to locate an anomaly after capturing.
n Capture a sudden power loss with the drop trigger
Set the voltage drop trigger to capture a sudden power loss resulting from a blackout
caused by lighting or a circuit breaker tripping.
Set the window out trigger to capture an impulse noise or surge noise (voltage swell)
caused by, for example, the solenoid opening and closing.
Set multiple triggers on a single channel
Unlike with conventional MEMORY HiCORDERs, the 8860 series
allows you to set multiple trigger parameters on a particular single
channel. This allows you to set, for example, the glitch trigger, level
trigger, window-out trigger, voltage drop trigger, window-in trigger,
and on the same input wave-
form to monitor it. (8 parameters
in the 8860
-50 and 16 param-
eters in the 8861
-50 can be set.)
n Stop trigger for the MEM function
Unlike with conventional MEMORY HiCORDERs, a stop trigger is supported. This
enables the timing of measurement to be controlled for both the MEM and REC
functions. This also allows you to set Start or Stop independently for each trigger
source, thus enabling the timing of measurement to be controlled in a variety of
combinations. (Start or Stop trigger can also be set to the logical source.)
n Slope trigger
Unlike with conventional MEMORY
HiCORDERs, a slope trigger is supported.
This allows you to monitor a noise
superimposed on periodic waveforms such
as a power waveform. This also allows you
to monitor a rapid change in temperature
with the amount of change in slope instead
of level.
n Edge detection and level detection of the logic trigger
Unlike with conventional MEMORY HiCORDERs supporting only
edge detection, the Models 8860
-50 and 8861-50 supports level
detection of the logic trigger. This function causes the trigger to be
activated when a specified pattern occurs, even if the logic pattern
condition is not met after the start of measurement.
n
Set the event times independently for each trigger source
* For the analog trigger only
Unlike with conventional MEMORY HiCORDERs,
this allows you to set the event times independently for
each trigger source, thus enabling the setting of trigger
conditions in a variety of combinations.
Accurately capture waveforms with diverse parameters
- Advanced trigger function -
A simple level trigger causes the
start trigger to be activated
The eighth level trigger causes the
stop trigger to be activated (in the
case of specifying the event times)
Power waveform noise Power waveform noise Rapid change in temperature
For edge detection of pattern “1, 0, 0,
,” the
trigger is not activated in this position.
For edge detection, the trigger is not activated unless
the condition is not met after the start of measurement
For level detection, the trigger is activated only if the
condition is met after the start of measurement
In case of conventional edge detection
1
0
0
1
0
0
1
0
0
In case of level detection
The trigger event times for the
trigger source is set to 5.